Turbine.



A. =PETTIGORE.

TURBINE.

APPLICATION FILED JUNE 16, 1908 Patented Jan. 19, l909.

3 SHEETS-SHEET Hill FI E WITNESSES 0225/1992? icon? ATTORNEYS" A. Pyncomi.

TURBINE.

APPLICATION FILED JUNE 16, 1908.

Patented Jan. 19; 1909.

3 SHEETS-SHEET 2.

WITNESSES A. PETTIGORE. v

TURBINE. APPLICATION FILED JUNE 16, 1908.

Patented Jan. 19,1909.

3 SHEETS-SHEET 3.

. N VE N T0]? .2? 22 /3072 911 625500119 wlm'sssss ATTORNEYS ANTHONY PETTICORE, OF SEDRO WOOLLEY, WASHINGTON.

' TURBINE.

Specification of Letters Patent.

Patented Jan. 19, 1909.

Application filed June 16, 1908. Serial Ila-138,747.

To all whom it may concern:

Be it known that I, ANTHONY Pn'r'rrconn, a citizen of the United States, and a resident of Sedro Woolley, in the county of Skagit and State of Washington, have invented a new and Improved Turbineof which the following is a full, clear, an exact description..-

This invention relates to certain improvements in turbines adapted to be operated by a motive fluid, and relates more particularly to that type of turbine in which the motive fluidescapes through nozzles against a rotor or'impact wheel.

The object of the invention is to provide certain improvements in the means for controlling the escape of the fluid, and also in the means whereby the fluid after impacting at high pressure with one rotor may flow through a second nozzle in a partition plate to impact with a second or low pressure rotor.

Reference is to be had to the accompanying drawings, forming a part of this speci fication, in which similar characters of reference indicate corresponding parts in all the figures, and in which- Figure 1 is a transverse section through a turbine constructed in accordance with my invention, said section being taken on the line l1 of Fig. 2; Fig. 2 is a central longitudinal section taken on the line 22 of Fig. 1; Fig. 3 is a transverse section taken on the line 33 of Fig. 2; Fig. 4.- is a longitudinal section on the line l4i of Fig. 1; Fig.5 is a central longitudinal section 0n ,the" line 55 of Fig. 8; and Fig. 6 is asectional detail on the line 66 of Fig.3;"'

In the specific form or turbine illustrated in the accompanying drawings and embodyingmy invention, there is provided a casing 10, which may haveagcmovable end plate 11, which together with the body of the casing, serveto support a main drive shaft 12. Within the casing, there is provided a partition 13' which subdivides the interior of the casing into two separate compartments; one, a high pressure compartment 14 and the other a low pressure compartment 15. Rigidly mounted on the shaft 12, there are provided three rotors or impact wheels, two of them, 16 and 17 being mounted in the high pressure compartment 14, and the otheil, 18, being mounted in the low pressure compartment. Eachiwheel is provided with a pluto, the chamber flows from the nozzles.

rality'of pockets or buckets in one face thereof, adjacent the periphery. The pockets 19 and 20 of the rotors 16 and 1? are on the faces which are toward each other, while the pockets 21 of the rotor 18 are on the face toward the partition 13 and are slightly larger than the pockets 19 and 20. The walls of each pocket are at an angle to the face of the rotor and also at an angle to the direction of rotation thereof, as will be set forth more fully hereinafter. The pockets 19 and 20 are so disposed in respect to each other that they do not receive the steam or other motive iiuid at the same time.

Intermediate the two pressure impact wheels or rotors 16 and 17, I provide a controlling member 22, serving as a combined steam chest, throttle, a shut-off valve, nozzle, steam inlet, speed regulator, and automatic feeder, to both of the high pressure rotors. This member 22 is preferably in the form of a longitudinally-movable bar extending through the casing substantially tangentially and in a plane at right angles to the main drive shaft. The ends of the bar extend through the walls of the casing and the center portion of the bar is disposed interme diate the two rotors 16 and 17 and closely adjacent to each. The interior of the bar is provided with two chambers 23 and 24:, and in the upper surface of the bar are inlet ports 25 and 26 through which steam or other motive. fluid may be admitted to the two chambers. In the upper wall of the easing above the bar, are two steam delivery conduits 27 and 28, leading from a common source and so disposed that only one of them can comn'mnicatc with its corresponding port in the bar at one time. lVith the bar in the position shown in Fig. 1, the steam. may he admitted through the conduit 27 and port :25 23, while if the bar be moved inwardly to its limiting position, the steam may be admitted through the conduit 28 and port 26 to the chamber 2i. The chamber terminates in two discharge nozzlcs 29, extending through the outer walls of the bar toward the two rotors and closely adj accnt the rows of pockets therein. These nozzles extend at an angle of substantially forty-five degrees to the further side of the corresponding pocket into which the steam The chamber 24: is provided with two similar nozzles 30, through which the steam may be admitted to the pockets, and the nozzles 30 are so directed that when steam is admitted it will strike the pockets on the opposite sides thereof from ,what the steam does which enters through the nozzles 29, as will be noted from an inspection of Fig. 4:. With the bar as shown in Figs. 1 and 2, the steam entering the chamber 23 issues through the nozzle 29 and causes the two rotors to move simultaneouslyin the direction indicated. by the arrow in I Fig. 1. If the bar be moved inwardly to its limiting position, the steam will issue through the nozzles and the two' rotors will move.

in the reverse direction.

The ports 25 and 26are so arranged in respect to theinlet conduits 27 and 28, that when the bar is in the intermediate position,

steam cannot enter either of the chambers 23' and 24, and the bar thus serves as a shut-oflf valve. Byvarying the position of the bar, the amount of steam admitted to either chamber may be controlled to vary the speed of the engine. The pressure of the impact of the steam against the walls of the pockets .is substantially the same on both rotors, and

the steam after escaping from the pockets may circulate upon all-sides of both rotors,

. so that the pressure at all points within the chamber 14 will be equal. All end thrust on "of the' high pressure chamber or compart the high pressure rotors or the shaft 12 is completely eliminated.

The partition plate 1.3 forms one end-wall ment 14;, and in this partition are passages through which the steam may escape from the high pressure compartment 14 into thelow pressure compartment 15- and into the pockets of the'low pressure rotor 18. As.

many of these passages may be provided as desired, but, as illustrated, there are provided two pairs of passages, one pair 31 and 32 being disposed diametrically opposite tothe otherpair. The passages of each pair extend at an angle to each other, as indicated in [Fig 6, and serve as nozzles through which the steam is delivered against the pockets of the low pressure rotor. The portion of the partition adjacent the nozzles is slightly raised to bring it into close proximity with -the surface of the rotor, or rather the remaining portion of the surface of thepartitron is cut away to bring it away from the rotor and permit the escape of steam from the pockets 21.

Within the high pressure compartment and adyacent the inner surface of the partition 13, is a member for controlling the now of steam through'the nozzles 31 and 32. As shown, this controlling member comprises a collar rotatabl y mounted on a shoulder 34 of the partition and having arms serving as valve plates and disposed adjacent the nozzles. With the controlling member in the position indicated in, Fig. 3, the

steam may flow through the nozzles 32 to rotate the low pressure rotor in one direction, while by slightly rotating the controlling member the nozzles 32 may be closed and the nozzles 31 uncovered, so that the lowpressure rotor will travel in the reverse .directlon.

For operating the controlling member 22 and the controlling member 33- simulta-- neously, preferably provide an operating lever 36 pivoted to the wall of the casing and having a link-87 connecting it to the end of the controlling member 22'. A second link. :38 connects the lever to a rod'39 extending through a stufiing box in the wall of the casing, and the inner end of the rod 39 is connected by suitable links 4.0 and 4:1 and alever 42 to an arm 43- on the controlling member 33. Adjacent the operating lever- 36 is a quadrant 4.4 for engagement with a dog e5 carried by the lever and serving to hold the latterlin the predetermined position.

By means of the connections above described, a movement of the lever 36 operates the controlling members22 and 33 simultaneously, so as to direct the steam to both the..high pressure and the low. pressure rotors at the same time and to rotate them in the same direction. The steam after operating on the low pressure rotor may escape from the low pressure chamber 15 in any suitable manner, as, for instance, througha 'of said member shuts oil the supply of motive fluid.

2. In combination, a rotor having a series- -of buckets, a member arranged substantially tangentially of said rotor and serving to deliver the motive fluid to said rotor to rotate the latter in one direction, and means whereby 'the longitudii'ial movement'of said member directs the motive fluid against therotor to rotate it in the oppositedirection.

3; In combination, a casing, a rotor within said casing and having buckets'adjacent the periphery thereof, a member extending 4 through said casing ad acent said series of buckets and serving to deliver motive fluid to said buckets, and means whereby the longitudinal movement of said-member shuts off the supply of motive fluid.

4. In combination, a casing, a rotor within said casing and having buckets adjacent the periphery thereof, a member extending through said casing adjacent said series of buckets and serving to deliver motive fluid to said buckets to rotate saidrotor in one direction, and means whereb themovement of said member directs t e motive fluid against the buckets torotate the rotor in the reverse direction.

' the supply of motive fluid to one of said chambers and admits motive fluid to the other of said members to reverse the direction of rotation of the rotor.

G, In combination, a casing, a drive shaft extending therethrough, two rotors mountedon said drive shaft and each having a series 25 of buckets on=the side thereof adjacent the other rotor, and a motive fluid controlling memberhaving an inletport and oppositelydisposed discharge nozzles and extendin between ,said rotors adjacent their perip iery 30 and movable to control the flow of fluid through said nozzles.

In testimony whereof I have signed my .name to this specification in the presence of two subscribing vvitnesses.

ANTHON Y PETTICORE.

Witnesses:

HOWARD SEABURY, F. J. Idonnow. 

